11220664 has 32 divisors (see below), whose sum is σ = 25895520. Its totient is φ = 4438656.

The previous prime is 11220653. The next prime is 11220673. The reversal of 11220664 is 46602211.

11220664 is a modest number, since divided by 20664 gives 112 as remainder.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6979 + ... + 8434.

It is an arithmetic number, because the mean of its divisors is an integer number (809235).

Almost surely, 2^11220664 is an apocalyptic number.

11220664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11220664 is an abundant number, since it is smaller than the sum of its proper divisors (14674856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11220664 is a wasteful number, since it uses less digits than its factorization.

11220664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15439 (or 15435 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 11220664 is about 3349.7259589405. The cubic root of 11220664 is about 223.8753026196.

Adding to 11220664 its reverse (46602211), we get a palindrome (57822875).

The spelling of 11220664 in words is "eleven million, two hundred twenty thousand, six hundred sixty-four".